5 May | 1456. Maximum Number of Vowels in a Substring of Given Length.cpp

class Solution {
public:
    int maxVowels(string s, int k) {
        int count = 0, ctemp = 0;
        for(int i = 0; i< s.length(); i++){
            if(s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' || s[i] == 'u'){
                ctemp++;
            }
            if(i-k >= 0){
                if(s[i-k] == 'a' || s[i-k] == 'e' || s[i-k] == 'i' || s[i-k] == 'o' || s[i-k] == 'u'){
                    ctemp--;
                }
            }
            if(ctemp > count){
                count = ctemp; 
            }
        }
    return count;
    }
};